The world's largest compressed air energy storage facility has officially entered the main cavern construction stage, following the smooth completion of the 1,037-meter-long No.1 inclined shaft excavation. As the world's largest project in terms of installed capacity and energy storage scale, it is expected to generate about 2 billion kWh of electricity annually, reduce carbon dioxide emissions by more than 1.6 million tonnes and provide a new "underground solution" for large-scale new energy consumption.